On Thursday, officials with the Chicago Police Department said the city was one homicide away from the 500 mark. Hours later, a 40-year-old man was fatally shot in the Austin neighborhood on the city's West Side.

Police say Nathaniel Jackson was found on the sidewalk outside a convenience store with a gunshot wound to the head late Thursday.

The Cook County Medical Examiner's Office says Jackson was pronounced dead at Stroger Hospital early Friday.

Jackson's death remains under investigation. No arrests have been made.